chromeos: Fix a bug in the battery-time-rounding code.

ash/system/chromeos/power/power_status_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/system/chromeos/power/power_status.h"
 
 #include <set>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 120 matching lines @@
   // Check that minutes are rounded.
   PowerStatus::SplitTimeIntoHoursAndMinutes(
       base::TimeDelta::FromSeconds(2 * 3600 + 3 * 60 + 30), &hours, &minutes);
   EXPECT_EQ(2, hours);
   EXPECT_EQ(4, minutes);
 
   PowerStatus::SplitTimeIntoHoursAndMinutes(
       base::TimeDelta::FromSeconds(2 * 3600 + 3 * 60 + 29), &hours, &minutes);
   EXPECT_EQ(2, hours);
   EXPECT_EQ(3, minutes);
+
+  // Check that times close to hour boundaries aren't incorrectly rounded such
+  // that they display 60 minutes: http://crbug.com/368261
+  PowerStatus::SplitTimeIntoHoursAndMinutes(
+      base::TimeDelta::FromSecondsD(3599.9), &hours, &minutes);
+  EXPECT_EQ(1, hours);
+  EXPECT_EQ(0, minutes);
+
+  PowerStatus::SplitTimeIntoHoursAndMinutes(
+      base::TimeDelta::FromSecondsD(3600.1), &hours, &minutes);
+  EXPECT_EQ(1, hours);
+  EXPECT_EQ(0, minutes);
 }
 
 }  // namespace ash